Yma o Hyd (English: Still Here) is a patriotic song in the Welsh language released by Dafydd Iwan in 1981. The song extols the survival of the Welsh nation over the centuries since Macsen Wledig led a Romano-British army in 383 AD during the final years of the Roman Empire. The historian and Welsh nationalist politician Gwynfor Evans is said to have given him the idea for the song. A chapter on the history of the song and its context appears in Siôn Jobbins's book, The Phenomenon of Welshness, or 'How many aircraft carriers would an independent Wales need?' (Gwasg Carreg Gwalch, 2011).